Material:  nickel free surgical steel  Dimensions: Available in 3 lengths: 15", 16", and 17" - if you do not see your size, please shoot us an email here! Care: Surgical steel jewelry will not tarnish, rust, or corrode, making it maintenance-free. *the Dolorem necklace I'm wearing in the last photo is 17", layered with the 15" Talis Dice Necklace This necklace is part of our Rowdy Collection.